Quirky ISO, Manual

ISO

|

  14

TROUBLESHOOTING TIPS

PROBLEM

POSSIBLE CAUSES

WHAT TO DO

THERE IS A VISIBLE 

GAP BETWEEN THE 

CEILING PANEL AND 

CEILING

The hole is smaller than  
10” x 10” (25.4 cm x 25.4 cm)

Remove panel (refer to Care & Maintenance) and check to see  
if fan was installed properly

Bottom edge of fan is  
less than 3⁄4” (1.9 cm) from  
ceiling surface

Remove panel (refer to Care & Maintenance) and check to see  
if fan was installed properly

THE FAN SEEMS 

LOUDER THAN IT 

SHOULD BE

CFM too high

90 CFM fan is designed for rooms up to 100 sq ft (9.3 sq m)

Damper (exhaust port) 
not working properly or 
is damaged.

Check exhaust flap to ensure it is opening and closing properly. 
If the exhaust fan has become damaged, please call Customer 
Service

Bend in duct too close 
to fan discharge.

Be sure you do not have any sharp bends in duct closer  
than 18” (45.7 cm) to the fan discharge

Fan body not securely 
attached.

Be sure the fan is securely attached to your ceiling joists

Fan duct is being obstructed  
at some point (including end  
of duct)

Check the air duct to ensure the duct is not restricting air flow

Fan may be clogged with 
dust or debris

Refer to Care & Maintenance section for cleaning instructions

THE FAN IS NOT 

CLEARING THE 

HUMIDITY OUT  

OF THE ROOM.

Insufficient intake airflow 
within room.

The fan is not able to draw air out of the room without enough 
airflow to draw from have a door or window slightly ajar or open 
to allow airflow

Insufficient CFM

Be sure the CFM rating on the fan matches the requirements 
for your room size. 

NOTE:

 If the fan clears steam from the room 

within 15 minutes after the shower has been turned off, the fan is 
operating properly

Dust/dirt is clogging  
fan intake

Refer to Care and Maintenance instructions

Duct may not be connected 
to fan properly

Check air duct and fan connection to ensure that there  
is a proper seal